Posted by kadyn on .
I need help with this question
How many calories does a 75kg woman use in walking up stairs to a point that is 20m higher? answer is 3571 I got to show how they got the answer.

physic 
bobpursley,
work=mass*g*20joules (1calorie/4.18joules)

physic 
Kadyn,
thank you i am not getting 3571 with that formula am i doing something wrong